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Definition of “substantial math”?
Florida State’s economics major does not require calculus (only “recommended”, and not listed as a prerequisite for required economics courses): http://coss.fsu.edu/economics/node/3 .
Penn State’s economics major (BA) also does not require calculus: http://www.econ.psu.edu/undergraduate/academic-plan-eclba . The BS version requires first semester single variable calculus: http://www.econ.psu.edu/undergraduate/academic-plan-eclbs .